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holiday-lights
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Full-white mode

This commit is contained in:
Neale Pickett 2016-11-27 18:06:09 -07:00
parent c0ec2a98fb
commit 3fbafaf0ec
2 changed files with 43 additions and 11 deletions
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16
README.md
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@ -20,6 +20,14 @@ I used an Adafruit Pro Trinket for mine, which has 150+ lights.
Of course, a standard Arduino will work just fine too!
This was coded to color-correct a specific type of GRB LEDs on wires I got from Amazon.
It's coded to match the lights we already have, which are biased toward yellow and amber.
You may have gotten lights wired RGB, in which case this is going to look very green.
It should be just a matter of switching the first two bytes in each color definition
to go from GRB to RGB.
Setup
-------
@ -34,7 +42,7 @@ You can plug the LED strip into the +5v on the power supply;
You can power your microcontroller from the beefier power supply, too,
so you don't have to run USB just to power the microcontroller.
This was coded to color-correct a specific type of GRB LEDs on wires I got from Amazon.
It's coded to match the lights we already have, which are biased toward yellow and amber.
Some of the lights are wired differently and the colors are going to be wrong.
Play around, commenting out all but one color, to see if it's right.
The code as written wants pin 4 to be connected to ground.
When you disconnect it,
the whole strand goes white.
My family has a tradition of the tree going from colors to white on the morning of the 25th.

28
holiday-lights.ino
View File

@ -6,6 +6,8 @@
#define PIN 6
#define NUM_LEDS 150
#define WHITE_PIN 4
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRB | NEO_KHZ800);
const uint32_t colors[] = {
@ -24,10 +26,11 @@ const int ncolors = sizeof(colors) / sizeof(*colors);
void setup() {
strip.begin();
strip.show();
pinMode(WHITE_PIN, INPUT_PULLUP);
}
void loop() {
for (int i = 0; i < 12; i += 1) {
void loop_color() {
for (int i = 0; i < NUM_LEDS/12; i += 1) {
int pos = random(NUM_LEDS);
if (random(100) < 20) {
int color = random(ncolors);
@ -39,3 +42,24 @@ void loop() {
strip.show();
delay(240);
}
void loop_white() {
for (int i = 0; i < NUM_LEDS/12; i += 1) {
int pos = random(NUM_LEDS);
if (random(100) < 5) {
strip.setPixelColor(pos, 0x0);
} else {
strip.setPixelColor(pos, 0x99ffaa);
}
}
strip.show();
delay(24);
}
void loop() {
if (digitalRead(WHITE_PIN)) {
loop_white();
} else {
loop_color();
}
}